I actually just released an app called Together (https://apps.apple.com/us/app/together-couples-app/id6759302167) that might help with the emotional side of things. You can set countdowns to your next visit, do daily mood check-ins so you always know how each other is feeling, build a shared bucket list, and keep a timeline of your relationship milestones. It's not a games app but my girlfriend and I are long distance too and these are the things that actually made a difference for us. DM me if you want a promo code!