/vr/ - Retro Games

So I found my old GB and GB Color recently, and I'm looking to add to my collection. What are your must plays/hidden gems for the GB/Color?

I've got Link's Awakening/DX and Pokemon Blue/Yellow, Ducktales 1/2, Final Fantasy Legend II, Pokemon Trading Card Game, Mega Man II [Looking for the other 4.] Oracle of Seasons, Looney Tunes Babs Big Break, Gargoyles Quest and some other junk like Humans! and the goddawful Bill and Ted game.

Managed to fail at several auctions on eBay, so i'm looking for a place to get a DMG gameboy cheaply in the UK.

Puzzle game for the original Game Boy.

The main characters were two girls dressed in Playboy bunny suits (you know, ears, stockings etc.) and they pushed cubic rocks to solve puzzles.

The title was probably in Japanese and it's almost definitely older than 1997.