Hardly, the moment you buy a game it's yours and how you play it is completely up to you.
Now it IS illegal on most online games if the only cheats that are available are trainers or hacks. If the actual gaming company has built in tricks or hints to the game and you happen to use those that they provide, that is allowed. But not hacking or trainers (IN ONLINE GAMES: Maplestory, Xbox Live, Ps3 Online, Runescape, WOW, etc).
If you mean cheats on flash games, those are legal as well, so long as you don't use any hacks/trainers on them if it's a bought flash game. But if the cheats come built in or the game is free then it is allowed.
In Bigpoint games such as seafight, there are no cheats
Lots of people use cheats. I haven't found many cheats, but the only one i have i use a lot.
Hacking games and activating 'cheats'.
There are many types of cheats that you can use. There are many cheats for many Sponge-games. However, you should not cheat, it is unfair.
There are no cheats on any Pokemon games you have to use a gameshark but they can delete your data!!
u should never use cheats for any fifa games
to get "prizes" or any other things like that.
you cannot use guitar hero 3 cheats for and of the other guitar hero games
Countless games contain cheats.
no, you have to use action replay.you use gameshark for gba games
get cheats dont now the code action replay or if you have an r4 chip use its cheats
Celebi is in Ilex Forest in the Japanese versions of the games, unless you use cheats.