If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).
Megabyte Punch is an electro adventure/fighting game in which you build your own fighter. Every creature in the game is made of separate parts. Parts have their own powers and bonuses (like gun arms for a shoot ability) and you can attach them to yourself freely. You travel through different environments, search for hidden parts and battle other creatures for theirs. This is the adventure mode. Then there is the fight mode. Here you can fight other players in a destructible arena with the abilities your customized creature gives you.