We've got another pair on the Virtual Console (will we never return to the three-game glory days of yore?) and they don't seem to have too much in common. Let's just skip to the talking about them, what do you say?
Spelunker (NES, 1 player, 500 Wii Points): In Spelunker, you play an adventurer who travels to the world's most junk-littered caves to do a little clean up to try to impress a girl he likes who's also a Greenpeace member. Meanwhile, bats (which love cave junk, because of how much easier it makes echolocation) try to kill you. ... Or something like that.
Super R-Type(Super NES, 1 player, 800 Wii Points): If you don't want to put your fist through a wall, you'd probably best avoiding Super R-Type, known for its high difficulty and lack of check points. But maybe you want to put your fist through a wall. Maybe you have a dilapidated wall that needs removing, or are considering adding some new fist-shaped windows. If so, Super R-Type is there for you.