Outer Wilds
Might be a little advanced for a 4yo, but it definitely checks the exploration/adventure mark.

Steamで40% OFF:Outer Wilds
Giant Bomb、Polygon、Eurogamer、The Guardianにゲームオブザイヤー2019の候補として選ばれたOuter Wildsは、終わりのないタイムループに囚われた恒星系で繰り広げられるオープンワールドミステリーで、高い評価を獲得し、賞を受賞しました。
Paying them using time is a mistake in my opinion. Instead, we should use mileage. By using mileage instead of time, we make sure they still get paid for their commute, but also they don't get paid extra for sitting in traffic or while waiting for the bus. Setting a mileage cutoff to prevent abuse would also be a good idea, say 30 miles round trip is paid for, the rest is on your own time. We could also pay for public transit expenses to encourage public transit use, if available.
Was looking at this a while back, but went with an Asus Zenfone 9 since the Fairphone was still unavailable.
Just checked on r/interestingasfuck, and it says the subreddit is unmoderated.
Glad I left, only reason I still have my account is I'm waiting on my reddit data request.