Spelunker games in order

All 2 games of the Spelunker series in the order they came out, from Spelunker (1983) to Spelunker II: Yūsha e no Chōsen (1987).

1. 
   SpelunkerAtari 8-bit, Arcade, NES +3 · MicroGraphic Image
   41Dec 1983
2. 
   Spelunker II: Yūsha e no ChōsenNES · Now Production
   18 Aug