#17 Ratchet & Clank All 4 One
This game is the tenth installment in Ratchet & Clank series. Ratchet & Clank All 4 one, takes place after the events of 'A Crack in Time' where our main characters Ratchet, Clank, Captain Qwark and Doctor Nefarious are in a bit of a mess. As the antagonist, Nefarious, sets out to fully remove our heroes, he builds a machine called the Creature Collector. His plan quickly takes a turn for the worse, making not only himself but the rest of the characters stuck in the machine world.
Past Ratchet games relied deeply on the use of puzzle solving, everything from use of multiple Clank bots to keeping the pace of the time just in order to make the next platform jump. This time around though you won't be taking on the puzzles alone. The new installment is heavily based on cooperative gameplay. All 4 one allows for up to four player co-op, which gives you a good excuse to call up some buddies and waste hours at a time to have some good fun.