Here are Nintendo 64 video game wall hangers, designed to connect straight or staggered, extendable to as many games as your wall will support. Games can be snapped out easily for playing. All parts print without support structures.
Use the plank pieces to connect the hangers together. Glue with "Loctite Vinyl, Fabric & Plastic Flexible Adhesive" available at Home Depot or your adhesive of choice.
See instructions for more info.
Print without support structures, recommended layer height of .2mm. Figure out how many of each type of connector planks you'll need and print that amount. Don't change the orientation of the hooks. They are meant to be printed on their sides to increase hook strength.
Connect straight or staggered and connect as many as you want. (See pictures.)
Glue with Loctite Vinyl, Fabric & Plastic Flexible Adhesive or your preferred adhesive.
To hang, use #8 countersunk screws. You won't need a screw in every hole. More screws counteract warping.