Motherload is probably the most addictive and time-wasting flash game i’ve played so far.
You control a drilling tank on Mars, the goal is simple; keep drilling going deeper and deeper, filling your storage bay with precious minerals. Once your storage tank is full, get back to surface, sell your minerals, earn cash, refuel, then get back to drilling.
The game is addictive in the sense that in the beginning you are pretty much limited on all accessories. Your fuel-tank holds very little fuel so you have to get back to surface at short intervals, as you earn more you get to buy new upgrades and your drilling machine gets more faster and convenient, although the game’s difficulty also increases as you go more deeper.
You get rewards for finding treasures and artifacts. All in all Motherload is an awesome way to spend a boring afternoon on. I’d recommend to try this 2D game atleast once. Do comment about how addictive you think this game is.