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.
Gameplay
The player character Thanatos has two resources: Flame and Heart. Flame is expended by breathing fire. This attack is required to burn down the gate of the castle and may be used to burn foreground objects such as rocks, knights, horses, soldiers and different dangerous creatures. Flame may be recovered by eating witches, who may be found tied between stakes, though a knight could still ambush nearby. 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. Heart is also spent when flying too fast for too long. Heart's level may be recovered by landing and walking slowly or staying still without being injured. Thanatos may also attack enemies by picking up an object in his claw and dropping them from a height; rocks and most enemies can be caught this way, even giant sea snakes. Thanatos opens his grasp when flying low - either ready to land or ready to catch something - and can catch an object if flying at a convenient height. Once Eros is rescued, she clings to Thanatos's neck, and rapidly turning may cause her to fall off. This is generally as well, for Thanatos can usually land near to wait for her climbing back; most of his enemies do not pay attention to her. But there are several special cases, which Thanatos should avoid at all costs: dropping Eros over the sea, for she would drown immediately; dropping Eros inside or even near a spider-infested cave, for she would be killed by a crawling spider, if Thanatos were not to land and take her away immediately; accidentally killing Eros himself, either by burning her or catching her with the claw. The player should not mistake her for a soldier, for she constantly waves her hands, drawing Thanatos' attention. If either of the two dies, the game ends, stating a reason why it is impossible to continue and complete it. The game ends in victory if the Thanatos carried Eros safely to her spellbook and then landed with her near the cauldron.
Reception
Thanatos was critically acclaimed. The ZX Spectrum version was Popular Computing Weekly's "Pick of the Week", and received a "CRASH Smash" accolade from CRASH, a "Megagame" award from Your Sinclair, 4 out of 5 stars from Sinclair User, and 8 out of 10 from Computer & Video Games. The size of the protagonist was highlighted in these reviews, the dragon sprite taking up a third of length of the display. On the animation of the dragon Jim Douglas commented that "the graphics really come into their own when you see the dragon flying over the landscape. The wings flap with superbly convincing swooshing sound effects, and the dragon waves his head around too." CRASH opined "the movement of the main dragon is very smooth and realistic" and C&VG found that Thanatos "is a big, nicely animated character who performs neat turns and landings on request." The parallax scrolling background was also praised, as was the overall atmosphere and satisfaction of controlling a traditionally villainous creature. There were minor criticisms; CRASH felt that Thanatos was "a little too hard" and PCW concluded "I'm not 100% sure that it would keep you hooked for weeks on end."
