Had a bit of a prune of my collection a while back (around 250 games I sold). I used the money to partially fund the purchase of my Asteroids Deluxe cabinet. My old website where I hosted my pics was Virgin and they dropped that service a year ago or so. So starting again.

SNES
I own a modded SNES that lets me play any region and it has a 50/60Hz selector. So I play most of my PAL games at 60Hz. Those that don't work at 60Hz I have swapped for NTSC versions. I've tended to go for US versions to avoid any language barrier.

PAL Battletoads glitches at 60Hz. I only keep this for collecting purposes. I play the US version which I own cart only.

Pilotwings is the US version.

Space Invaders is US-NTSC.

PAL Super Mario World glitches at 60Hz. I only keep this for collecting purposes.

Tetris & Dr. Mario is US-NTSC.

Here's a selection of Tetris games for the Super Famicom. No language problems here.
With my US copy of Tetris & Dr. Mario I think I have all Tetris games for the SNES.
The black box version of Tetris 2 + Bombliss is the limited edition that was a later release. It has extra puzzles and remixed music.

Caravan Shooting Collection is a compilation of 3 NES shmups with improved scrolling and no flicker.