On a dark and stormy night, a mad botanist is doing a bit of research in his laboratory, when a tomato plant near some chemicals drops a tomato into a beaker.

The beaker explodes, and out comes a tomato with a face and limbs that says "MUTATE!" The scientist, covered in soot and ash, gives the new tomato a tired expression, as if he feels he is getting too old for this stuff.

The tomato then runs off to stop the forces of evil eggplant aliens, under the name Captain Tomaday! The titular tomato must traverse five levels that have baddies coming in all sorts of waves.

However, what sets Captain Tomaday apart from most shooters is its method of attacking. The A button makes Tomaday’s left fist shoot, and the B button makes his right fist shoot. Both fists can be fired simultaneously or one at a time.

Attacking with one fist for a while makes the other grow in size and power, eventually turning Tomaday’s other first into a 1-ton weight which does more damage than the usual fist.

Tomaday’s fists return to him as soon as they hit something, and this creates a risk vs. reward factor in taking risks and getting close to an enemy to take them out quicker versus taking them out from a distance even if it will take longer.