They re-released Angry Birds Classic a month ago for 99cents.
I'm glad I got it when I did, because Rovio removed it from the store yesterday.

The reason why:

More people were BUYING the old school game than they were downloading the newer "free-to-play" ones, and it was hurting their sales.
#mobilegaming #mobileapps #angrybirds #AngryBirdsclassic #rovio #playstore #googleplaystore #android #androidgaming #androidgames #mobileapplications #technology #technews #google
https://www.eurogamer.net/angry-birds-will-leave-android-store-developer-says-its-just-too-popular

Angry Birds will leave Android store, developer says it's just too popular

The original Angry Birds is being pulled from Google Play due to its business "impact" on developer Rovio's other mobil…

Eurogamer.net
P.S.
Apple users can still get it, but they made it harder to find by renaming it to Red's First Flight. Lol