Do not get a new console game as it first comes out. I know it's tempting to have the newest gear, but history has shown that 6 months following launch, many console systems cost will fall $100. Save yourself some cash and await the initial rush to die down until you purchase your console program.
Look at video game ratings. Like movie ratings, video games have been rated depending on their material. The ESRB includes several evaluations for video game titles.
If your children get tired of games fast, rent them rather than getting them. You may save quite a lot of money this way. Al