>>37437020They’re all worth playing. Rescue Team was the first one, and introduces players to the series. It’s simple and a good place to start. Explorers is widely considered the best one, and Sky is the best Explorers game because it has content that the other two don’t. Gates To Infinity is subpar, but still worth playing. Arguably easier than Rescue Team, maybe start with this one instead. Super is alright. Story starts off really slowly and the pacing is awful, but once it picks up it REALLY picks up.