It also works fine on American Windows95, but all texts are replaced with underlines.
It's an arcade conversion.
It uses keyboard (similar to arcade control) or mouse.
All voices are done by Kanai Mika (Suchie-Pai)
Uncensored art.
Gallery menu in option mode.
4 difficulties.
No AutoPlay, but It has Auto Tsumo option (can turn off)

you can adjust difficulty, sound/music volume, and watch the animation (scrolling still pictures).

There is no autoplay feature.
Even if you declare Richi, it doesn't show which tile to throw out.

You can get points from panel match.
final boss kyoko(Suchie-Pai) will appear when you max out the point.

pops up with right click.

When the opponent is trying to win by Ron(pick up your tile to win)
Suchie-Pai jumps up and break the tile.
uses 1 HyperSekkan item.

When in tenpai situation (just 1 more correct tile to win), You can use special attack (requires 1 Suchie Stick item) to win instantly.

The tile you need just pops up and you win.

If you have Suchie Stick item and declare Richi, you will automatically do Suchie Stick.

You play panel match game between rounds.

You get the item when you match 2 of them.

When you match all the panel, you win the opponent.

when you get enough points, you level up.

Final boss only appears on Level-Max.

there is nudity, but top only.