My best friend and I used to play SubTerra when we hung out every weekend. Company that originally made it is sketchy for a number of reasons, but they're also gone now and another company owns the games. It's a tile based game where you are trying to escape a cave system with monsters in it and you create the board as you play. Each character has abilities to help this and there's a turn limit you have to escape in. It can be really addicting.

I also really enjoy Campy Creatures and Space Park - they're pretty simple games (same creators) that a great for a group of 3-5. Campy Creatures is a little bit like War, where each player gets a hand of monsters and the highest number wins. There are "people" cards laid out and winning lets you pick who you take, with the people having point values assigned (which is what ultimately determines the winner). Hopefully I explained it okay. Space Park is very different - the goal is to get 20 victory points, which are mostly earned by completing tasks. There are 6 "locations" you travel to which give you various resources to help you complete the tasks.

I also love playing Quiddler - it's a fun word game, nothing super complex about it unless you play with people who make up words (we have a rule that half the table has to agree that it's a word).

These come out a lot at my game nights, hopefully I did them justice with my descriptions.