Oh, those are all actually really good games...
I'm not sure how well Revenge of the Gator holds up against newer digital pinball offerings. It's pretty simple, and with a single table to play through (with multiple levels and bonus games) there isn't a ton of variety... But the design is solid and still plays really well. Worth checking out for pinball fans!
Avenging Spirit is super weird. You are a ghost, who can (in fact, must) find bodies to inhabit during your quest to save your girlfriend from the gang that killed you. The body swapping is interesting, as you can always choose to abandon your current host for a different body - but your spirit power will rapidly fade when outside a host. Every body has different abilities (speed, jumping, attack) also, which means there is room to experiment with different approaches. I liked it a lot as an oddball game to pick up and play.
Mole Mania is a puzzle design with a lot of heart, and stands up just as well today as it did when released. It might remind you of Sokoban "push the block" style puzzles, but with two vertical layers to work with and a charming story, it stands out from the crowd. A hidden gem, for sure!