Try to make a keygen for this file! With a click of a button (so that you don't need to use a disassembler), you can reveal the checking algorithm!

Infinity (Health, Lives, Ammo, Rockets)
Bounce around killing off the enemy.

No damage, Infinity Energy, Bonuses 10x more often, Full-Screen
Part of Ferry Halim's Orisinal arts collection. Simply relaxing experience for the soul.

Air blocks support long blocks.

NOTE: splitting does not work properly, and the lightweight blocks still break.
It's not a square, it's a Bloxorz. These challenging puzzles ask: Can you get a rectangular cube into a square hole?

Infinite (Barricade, Ammo, Gas cylinders, Mines, Bear traps, Search time), All links go to victorz.ca, All weapons, Accuracy, Quick reload, Fire rate, 100 supplies each time, Night time is at most 30 seconds, More zombies spawn
It was meant to be over. As it turns out, it's far from it.

Make your way to Union City to escape the mainland within 40 days and nights while fighting off the hordes from your make shift barricades once again.

Infinity Cash (even if it says 0)
Tank warfare at it's best. The world has gone to hell - it's up to you to set things straight and blast your way to victory in this survival of the fittest tank game.