I'm in the process of developing a game, and I've found a model that would go perfectly for the character. However, the scentre I already have is low poly and I can't find a good enough high poly to go with it. So tell me whether or not I should I should carry on with the art I have or find a low poly model.
There is a lot you could by choosing the right material/texture that will give you that 'minimalistic look'. Like Theraot mentioned, there are ways to make your mesh low poly. Check out the script provided here by the user 'robertbu'. It worked great for me and it might too for you!