Starward Rogue is easily the best arcade roguelike since Binding of Isaac: Rebirth and while it doesn't stray too far from its inspiration's influence, it makes up for this by executing its formula incredibly well.
Score Rush Extended is a fantastic remake of what had already been an excellent shooter.
RunGunJumpGun is simple arcade action taken to its extremes.
By the end of Thumper, the speed is insane, the music wild and oppressive, and the feeling of just barely holding on to a beast that wants to send you flying so it can gnaw your bones is disturbingly strong.
DoDonPachi Resurrection is a monster of an arcade shooter.
SuperHot VR is one of the best games VR has seen yet.
Polybius looks like a frenetic shooter that constantly has the player in a state of heightened tension, but the truly amazing thing about it is that it's almost the complete opposite in actual play.
Tormentor X Punisher is loud, mean, occasionally unfair, intentionally ugly and thoroughly awesome.
Nex Machina is an utterly fantastic arcade twin-stick shooter that doesn't so much revolutionize the genre as get almost every aspect just right.
SteamWorld Dig 2 is a huge, expansive and utterly fantastic mining/platformer, with a great variety of challenges and plenty of tools to attack them with.