WASD Control. E to Auto Shoot (might need to press repeatedly). C to Auto Shoot (might also need to press repeatedly). Q to change tanks (only some have been made) Use slide to upgrade or use the appropriate number to upgrade. Click or Space to shoot. Latest: Changed colour scheme to Diep.io accordingly.
EXPERIMENTAL Pen version of Diep.io Sandbox Tanks/ Ideas by creator of Diep.io (also Agar.io). Coding by @ThatNondescriptGuy. No more updates on Diep.io :(
