If the surprise is only meant for the grandchild, then it would be best to ask the child's parents. The parents should also be able to help you decide what type of video game to purchase as they will most likely know what your grandchild is interested in and what kinds of games they have played before.

If the surprise is meant for both your grandchild and its parents, then it may be best to seek help from another relative who knows exactly what kind of system you need to purchase the game for.

Alternatively, many video game stores offer inexpensive handheld electronic games which do not require any other computer or games console, in which case you would not need to consider compatibility issues.
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