I just found all of the lost relics in the mobile game Traps N’ Gemstones. The game is a Metroidvania-style platformer with various mechanics that you’ve seen in other games, from swimming, to cannon travel, to mine carts on rails, to all manner of platformer puzzles involving moving platformers, switches, and disappearing blocks. The game was very engaging, being big enough to cram many different mechanics and locations in, but small enough that I didn’t get too confused about the various locations.

Play Store: https://play.google.com/store/apps/details?id=com.donutgames.trapsngemstones&hl=en
iTunes Store: https://itunes.apple.com/us/app/traps-n-gemstones/id887421672?mt=8