Sonic Colors received mixed criticism from IGN , with its gameplay and design being praised and the difficulty levels being panned .
`` IGN referred to it as `` '' the best Sonic game in 18 years , '' '' praising its gameplay , controls , and level design , while criticising some difficulty spikes later in the game , as well as the multiplayer cooperation ; in their review , they complained that `` '' One screen is n't enough for two Sonics . '' '' ''
Sonic Colors