Two Fingers, but only one brain (2 F 1 B) - Split Brain Teaser, Cranial Quiz Puzzle Challenge Game 4+

The concept is fun and challenging, my only issue is that ads tend to pop up mid game. I would purchase however I have yet to be able to play a full game without an ad interrupting.

This is a great game, one of 5 of its type (split screen simultaneous mini games) I've downloaded and BY FAR the best; it's a wonderful brain workout that I use to help sharpen my focus, attention, and observational skills. There's a nice variety of games at the perfect difficulty level, and the game/graphics work well on my old iPad mini (1) with iOS 9.3.
I would definitely award it 5 stars except for, as everyone else says, THE FRICKIN' POP UP AD THAT INTERRUPTS GAME PLAY. I've never seen such an intrusive ad in any app, ever; it pops up every COUPLE MINUTES, often in the middle of game play and closing it frequently causes me to lose one or both mini challenges. This is TERRIBLE and at this point I'm unsure if I'll continue to play this game or not.
If the problem is fixed I will change my rating to 5 stars and download anything else offered by this developer. I have little hope though since it's already been years.

**NOTE: one reviewer suggested playing in airplane mode; this does NOT work to avoid the pop-up. :(

If you asked me what to give this app five months ago, I would've said 5 stars. But, after signing into Game Center and trying to play it, I have major issues with the app itself.

The first issue is the advertisement that always pops up when I'm trying to play. It directly asks "Do you want to try our new game. 2F1B? It's absolutely free!" with a 'Get It Now' and 'Miss Out' option. Although the ad itself is fine, I don't think it's appropriate to put them up in the middle of the game, which prevents the player from clicking on the two mini screens. I even got one I couldn't click away, because the bottom half was off the screen.

My second issue is how, after four months of not playing this game, there still isn't a new game mode, or even a new mini game. I'm starting to think that there will never be any, and these same games get more annoying and boring by the minute.

If you address both of these issues, I will gladly return my rating to five stars.