Mega Thumb: Dream Match is possibly the first virtual thumb war game I have ever played, although I can't be certain of that. You take control of a thumb as it works its way up the ranks to become the thumb wrestling champion.

The game is available to play for one or two players, although the AI in single-player is really quite difficult to beat. The best tactic I found was to quickly put the thumb down, then straight back up again - the AI will go for the pin and miss, allowing you to pin them instead. It's then a case of hitting the shift button when the bar is full to secure the pin.

What's very cool is that you can go into Edit Mode and customize your thumb with different stickers and clothing, although if you want to try this out, make sure you download the game rather than quickplay it - the materials won't load otherwise. Give it a download from Gamejolt.