Thanatos is an action game developed and published by Durell Software in 1986 for the ZX Spectrum, Commodore 64 and Amstrad CPC.

The player adopts the role of a dragon, Thanatos the Destroyer, who must rescue a sorceress, Eros, from imprisonment by an evil Lord of the underworld.

After she is recovered from the first castle, Thanatos must take her across the sea to find her spellbook, then carry her to a cauldron so she can complete a spell which will bring enlightenment to the land.

Heart is depleted as Thanatos is attacked by soldiers, knights, big creatures and rockfalls; this results in a quicker heartbeat and may finally cause an infarction.

"[5] Crash opined "the movement of the main dragon is very smooth and realistic"[2] and C&VG found that Thanatos "is a big, nicely animated character who performs neat turns and landings on request.