Metroid Fusion on the GBA still holds up as one of the tightest, creepiest Metroid games. You start off with Samus feeling weirdly vulnerable—her suit’s been surgically altered after a parasite infection, and now she’s stuck on this eerie research station where everything wants to kill her. The way the SA-X (that terrifying doppelgänger version of Samus) stalks you through the halls never gets old—you’ll be hiding in vents like a scared kid while it stomps past.

What I love is how the station slowly opens up as you regain abilities, but it never holds your hand. One minute you’re backtracking to melt a frozen door with your new plasma beam, the next you’re getting jump-scared by some bioweapon the scientists really shouldn’t have been messing with. The bosses? Brutal in the best way. That spider thing in Sector 4 took me way too many tries.

It’s got that perfect mix of tension and power-tripping when you finally unlock the good stuff. Just don’t expect to sleep well after the Nightmare boss fight.