for 480 there are some fun indie games that are usually around 80 msp. I bought zombie death zone for 80 msp it's not a bad game it's quite hard and addictive. Also worms 2 armageddon is pretty fun you can get that for 400 msp which you can play on your own against the AI or online. It also has a campaign with about 32 levels to complete of challenges and you can unlock additional levels with in game points that you earn from completing the other levels.