I would just make it easy and push the pinball in the corner, leaving it on the floor. you would only loose about 16-20 inches of space, unless you absolutely need that space. If for any reason you have to move a game, then you won't have to worry about the short legs.
But as others have stated, it won't be a problem to cut and reweld the bottom, or cut/fold/tap a hole. I'm lazy though, and that's a lot of work for 16 inches of space. If you're going to do a full row...
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