About the Game
Please note: There is currently no dedicated tutorial. If you don't enjoy figuring things out or you don't know much about tanks, it may be worth holding off until better guidance is in place.
Hull & Turret Shape Design
Easy to use and flexible enough to give you endless design starting points. Drag on a face or edge to move it. Bigger compartments create more internal space but have more surface to armour.Well angled shapes may bounce incoming shells off entirely, leaving only a scratch and several ringing ears.
Armour Design
Set the thickness of each armour plate, allowing you to block shots from your foes. Though the weight and space used adds up!Cannon Design
Build a gun capable of piercing enemy armour. You'll need enough space and force to rotate it. Make sure you save enough room for ammo!Crew Design
Humans are light but large and quite essential, squeeze them in and assign them one or more roles. Cramped and overworked crew perform poorly.Attached Parts
Add functional and decorative parts to the exterior of your vehicle. These can define where internals are e.g. the engine is positioned where you place your exhausts and vents, then gets hit if a shell pierces your armour in that area. Place a fuel port in front of the driver and the fuel tank just might absorb a projectile, saving their life - if it doesn't ignite...Track Design
Focus your tracks and suspension on trench crossing, mountain climbing, going fast or just looking cool.Engine Design
Design anything from ship engines to lawnmower engines in a basic powerplant designer.Fuel Tank Design
Set your fuel capacity and tank locations. Even bring them outside of the vehicle - if you don't mind them being shot off every now and then.Transmission Design
Design your ratios - make it faster backwards than forwards or give it a 1st gear that can climb any mountain. One of these on each track will let one side drive while the other reverses, turning on the spot.Internal Component Health
No hit-points. Vehicles carry on the fight as long as their critical internals are still functioning.Full Powertrain Simulation
Engines, transmissions & tracks work together to move your tank with a realistic simulation, making vehicles feel like the real thing.Scenarios
Battle in a range of environments with a team of your custom tanks, although make your design too expensive and you might be on your own. If your vehicle is destroyed, you carry on the fight in control of an ally - sometimes watching your previous self go up in flames.Screenshots
6 images
Version Information
Steam Patch Notes
Official update history
- Leaf spring suspension stiffness reduced by 20%
- Removed padding from the torque threshold required to upshift. Makes the driver less hesitant to upshift.
- Improved the accuracy of the resistive torque estimation used in the gear shifting logic. Fixes some cases of downshifting immediately after launch and also makes the driver less hesitant to upshift.
- Fixed belts partially disappearing when using leaf spring suspension high above the ground.
- Fixed modded invisible track belt showing magenta in the editor.
- Updated the starter blueprints.
- Torsion bars are now limited to 100mm length in WWI.
- Reduced lingering exhaust thickness by 1/3.
- Fixed another cause of modded engine tech allowing infinite RPMs.
- Constant mesh is now limited to interwar onwards.
- Synchromesh is now limited to earlywar onwards.
- Improved bogie articulation on leaf spring suspensions.
- Fixed grade resistance not being applied to the powertrain correctly, resulting in unrealistic performance moving uphill.
- Slightly reduced drifting.
- Exhaust colour and density now changes with the amount of fuel being burned.
- Increased speed of exhaust fumes.
- Added lingering exhaust.
- Lowered the coefficient of friction for tracks from 1.2 to 0.8.
- Reworked lateral traction to use the same model as longitudinal traction. Affects turning behaviour and creates more drifting on lighter vehicles.
- Reduced vehicle sliding on sloped terrain.
- Traction now competes with grade resistance for friction correctly, resulting in more realistic slippage driving up steep inclines.
- Fixed twin transmission not returning both transmissions to drive/reverse on both transmissions after steering in gear 1.
- Fixed modded engine tech allowing infinite RPMs.
- The gear number readout in the movement info screen now starts at 1 instead of 0.
Back from my break, thanks for all of the kind words and patience while I get this update polished!
- Hamish
- Fixed instability sometimes caused when switching from drive to reverse and vice versa.
- The driver will no longer downshift if the resulting engine speed would be above the rev limiter + the expected RPM drop from shifting.
- If the driver fails an uphill upshift, they will longer attempt an upshift to that gear for 10 seconds.
- Increased prediction accuracy of the torque output in the next gear, improving shifting decisions.
- The minimum engine speed the driver can dip to while upshifting is now scaled towards the idle on level ground and the operating rpm on 30d inclines.
- Fixed track inertia being around half as high as it should have been, resulting in tracks slowing down too quickly during speed matching and coasting. This will decrease acceleration but make shifting easier.
- Reduced rolling resistance at low speeds.
- Fixed twin transmission allowing instant upshifts by steering at the right time.
I'm off on a break until next Wednesday, so expect a pause on the movement update until then.
- Hamish
Synchromesh (default): Easier speed matching, allowing higher gear steps in some cases. Bigger and more expensive transmissions. Slower to engage gears.
Constant mesh: Requires precise speed matching by the driver. Small and cheap transmissions.
Slide mesh: WWI option pre synchromesh invention and constant mesh use on tanks. The same behaviour as constant mesh but bigger and cheaper.
These aren't limited by era yet.
Synchromesh goes: declutch > shift > reclutch
Constant mesh and slide mesh require the new double declutching: declutch > neutral > clutch > speedmatch > declutch > shift > reclutch
Your transmissions will be set to synchromesh and wont change size.
Other changes
- The driver now only upshifts if the vehicle is capable of accelerating in the current gear and the next gear would also accelerate.
- The driver now only downshifts if the engine speed drops below its operating rpm (+ an estimated drop from shifting) and the current gear isn't capable of accelerating.
- Engine 'Downshift' renamed to 'Operating speed'
- Speed match threshold increased from 50rpm to 100rpm. This gets bumped up to 250rpm if the engine is about to stall.
- Engine friction is now higher in earlier eras and track resistance has been reduced further. Should help with speed matching issues.
- Fixed vehicles not upshifting in reverse.
- Removed the failed shift notification
- Reworked driver shifting behaviour. Downshifts are now based entirely on torque, instead of speed. Upshifts consider whether speed can be maintained at the new gear, so the driver can upshift on inclines again.
- Viscous drag on the sprocket reduced across all eras below latewar. Reduces speed loss during gear shifting.
- Fixed energy injection when vehicles aren't level on their suspension.
- Made triggers for the failed shift notification less sensitive.
- Fixed tanks sliding at stand-still, introduced with the tension changes.
- Fixed track belts not colliding with objects above the track (actually fixed this time).
- Engine idle RPM is now automatically configured.
- The engine shift range used for the transmission warnings is now the top half of the engine's usable speed, instead of upshift - downshift.
- Adding new gears now copies the last ratio to the new gears, instead of attempting to smooth it from G1.
- An error is now displayed if the driver is unable to upshift due to too large of a gear step.
- Downshifts no longer have their speed match forced below the engine's rev limiter. So downshifts can fail now if your downshift is too high.
- Warnings are now displayed for potential issues with transmission setups.
- Fixed incorrect speed limits on transmissions with top gear that's not 1:1.
- Fixed vehicles rolling backwards without any inputs, more noticeable on some vehicles.
- Reverted transmission smooth function to the old one, since the new one was optimized for the old shifting. It now creates equal steps between gears.
- Reduced track sag on higher track tensions.
- Fixed track belts not colliding with objects above the track with certain setups.
- Braking now redistributes track tension.
- The angle the driver considers uphill (for gear selection) is now adjustable in the steering wheel properties.
- Improved belt collision accuracy at the ends of the tracks.
- Tension around the sprocket is now simulated more accurately, track tension will shift throughout the track when transitioning between drive and reverse. Shouldn't affect vehicle performance except for the time taken for the sprocket to shift the tension when switching between drive and reverse.
- Track belts now collide with objects above the track. They shouldn't clip through fenders when going over bumps anymore.
- The downshift disable after exiting a shift while the engine is accelerating is no longer active when driving up inclines.
- Fixed twin transmission pivot steers briefly reversing pivot direction when stopping after a clockwise pivot.
- Fixed the driver not cancelling a shift when you're trying to brake.
- Engine rev limiter can now be set to the engine's max safe RPM.
- Engine upshift can now be closer to the rev limiter.
- Fixed the driver overshooting when speed matching.
- The speed match target is now recalculated during the speed match, generally making it lower than before.
- Modded multi-tracks are now working again.
- Modded invisible track belt segments now working again.
- The driver can now go below the downshift if needed for a large gear step. This fixes some designs not upshifting.
- The driver will no longer downshift if the engine is accelerating or the last shift was under 3s ago. This stops an upshift-downshift cycle noticeable on some vehicles near their top speeds.
- Fixed twin transmission reduced turn performance introduced last patch.
Known issues
- Belts can clip through objects above them like fenders.
- The modded invisible track segment part used for wheeled vehicles causes a crash.
- Modded multi-tracks are broken.
- Shifting is now based on track speed instead of engine speed. The driver won't upshift if the resulting upshift RPM is below the downshift target and vice versa. Prevents the driver upshifting and immediately downshifting again.
- The driver's speed match target while upshifting is no longer forced above the downshift target. If you're stalling while upshifting now, you need smaller ratio jumps.
- Twin transmission: Fixed the driver throttling down when doing hard turns at speed.
- Twin transmission: Fixed incorrect shifting when downshifting during steering.
- Twin transmission: Fixed the clutch sometimes not engaging when launching into a steer.
- The driver can now upshift immediately after launch. Only downshifting has the 2s limit now.
- The delay after steering before the driver can shift reduced from 2 to 1s.
- Fixed LSS bogie wheel offsets being incorrect with mount scales that weren't 1
- During launching the driver now gradually releases the brakes while engaging the clutch. Improves hill launching and makes launches less jerky.
- Twin transmission: Fixed energy injection. Noticeable when the idle RPM was higher than the downshift target.
- Idle RPM can no longer be higher than 100rpm below the downshift RPM. This broke speed matching.
- Fixed the driver not launching in 1st when doing a hill start in reverse.
Big change with the shifting logic here.
If your driver isn't upshifting, you need to reduce the step between your gear ratios, lower your downshift or raise your upshift.
Will work on giving this a warning in the editor.
Known issues
- Belts can clip through objects above them like fenders.
- The modded invisible track segment part used for wheeled vehicles causes a crash.
- Modded multi-tracks are broken.
Current Release
22058447
Uploaded Apr 15, 2026
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System Requirements
How to Install
Sprocket.exe to play
Troubleshooting tips
• Run Redist/_CommonRedist installers if game won't start
• Add folder to Windows Defender exclusions
• Run as administrator
Download
Direct link available
3.4 GB
22058447
AFB142CB
43d2168aa871f3b7f72fccd173f7741388090d8a2a1cfde3f1269d02d5d505ef
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View AllDownload Sprocket for PC with a direct link or via torrent. Get the full version of Sprocket for free. Sprocket is a Action released by Hamish Dunn.