Hi, Looking at the iOS Appstore these days there's a bunch of games which are basically the same as a bunch of other games. A "clone" of another game seems to be a relatively frequent thing. For example, Clash Royale is a reasonably well-known game from the makers of Clash of Clans. Craft Royale is a wholly different game that is basically the same - certainly "borrowing" heavily from many of the original concepts of Clash Royale. Jungle Clash is another game cashing in on the same bandwagon. More generally, the concept of "Tower Defence" becomes a genre - and the creation of numerous games, some slightly different from others and some significantly different - is justified under accepting that the concept is now, apparently, in the public domain. So as game developers, where does copyright and IPR apply? For example, may I legitimately choose a premium game from the 1980s Commodore Amiga portfolio, and re-develop it (with improvements) today for Android/iOS? If I do so, taking the concepts of the original game but none of the artwork, trademarks (obviously), music or code, am I in breach of copyright? Is a game concept copyright? If so, what defines a game concept? Thanks, A.