Merkur's Egyptian flagship
Eye of Horus is the Gauselmann/Merkur group's best-known slot, a German arcade staple whose online version (via edict) arrived in 2016. It plays on 5 reels, 3 rows and 10 paylines, with Merkur also offering a 5-line configuration, and returns a 96.31% RTP — unusually generous for a classic-style game.
The god Horus is an expanding wild: he stretches to cover his whole reel and substitutes for everything except the temple scatter.
Free games with symbol upgrades
Three or more Temple of Horus scatters award 12 free games built around an upgrade mechanic: each Horus that lands adds an extra free spin and upgrades the lowest-value picture symbol to the next level, so long rounds converge on a reel set full of premium symbols. This upgrade ladder is where the game's biggest wins concentrate.