Checking the evidence…Reading the prices…Writing the verdict…
Developers
Zachtronics
2 games in the catalogue. 1 has the verdict “Buy now”.
Opus MagnumBuy now$9.99−50% · was
$19.99At or near its lowest price
97% positive on Steam
SHENZHEN I/OBuy on sale$14.99
Regular price; it has been much cheaper
95% positive on Steam
Best verdict first. The developer name is taken from the Steam page, so a studio that publishes under two names may appear twice.