A game by Technodot for PC, originally released in 2021.
Gel-Tank, also known as Nantai Todoroki wa Gel-Tank (軟体轟輪ゲルタンク), is a sidescrolling shooter starring a jelly-like creature named Gel, whose planet has come under attack by the invading Human Kingdom. While being chased through the forest by soldiers, the ground suddenly gives way and Gel finds himself in a cave system. In a scene reminiscent of Blaster Master, Gel soon stumbles across a tiny tank, which has an AI support unit named Eia. Eia suggests that Gel wear the tank as a sort of armor, which she promises will give him the power to fight back against the colonizers. Not one to look a gift-tank in the mouth, Gel squeezes inside and begins his adventure to thwart the invasion.While outside the confines of the tank, Gel is a black blob with big yellow eyes. He can move quickly, jump very high, and he can stick to walls and climb them. Inside the tank – where his eyes peer cutely out from between the treads – he loses the ability to stick to walls, but he is instead able to shoot a rapid fire machine gun. The gun may be fired in four directions (down while jumping), and holding the FIRE button locks its aim so the player can continue firing in one direction while moving in another (this can be toggled off in the options menu). The player is able swap between these two forms instantaneously at any time.