Wyvern is made between the two. Since the sixteenth century, in English, Scottish, and Irish heraldry, the key difference has been that a wyvern has two legs, whereas a dragon has four. However, this distinction is not commonly observed in the heraldry of other European countries, where two-legged dragon-like creatures being called dragons is entirely acceptable. In the modern fantasy genre, there is little differentiation between dragons and wyverns, with two-legged, magical reptilian creatures all likely to be referred to as "dragons" without any differentiation between types. Wyverns, when present as creatures distinct from dragons, tend to appear as less magical
Wyvern (video game) Yegge stated that he was working on rebooting Wyvern, although there were legal issues in the process of doing so. In April 2013, Yegge, having received clearance from Google to use Wyvern as a side project, announced his vision of a cloud-based Wyvern initially to be brought back on a mobile platform. In December 2016, Wyvern was re-released as an iOS game, with Yegge as the sole owner of the game after two years of negotiation with Wyvern's original owners. Now Wyvern is available for public play on iOS Appstore and Google Play. A PC version is in work. Wyvern