Is Anderssen's opening playable? There is a certain opening called the Anderssen's opening that plays like this.
[FEN &quot;&quot;]


a3 e5 2. h3 d5.

Black has developed two pawns, occupied the center, and opened up the lines for pieces, while White has only created weaknesses. Why, then, is this opening is said to be playabe?
That specific opening is called the Anderssen Opening: Creepy Crawly Formation, Classical Defense
From about 1,000 test engine games it seems that its a remarkably even set up;
White : 45.5%
Black : 45.5%
Draw  : 9%
Based off that result I would say its very much playable. This is be cause you white usually plays the left side of the board slowly working towards the center;
One Notabale Game describing that concept Michael J Basman vs Yuri Yakovich - Hastings (1994)
 rnbqkbnr/pppppppp/8/8/8/7P/PPPPPPP1/RNBQKBNR w KQkq - 0 1


 1. h3 e5 2. a3 d5 3. c4 c6 4. e3 Nf6 5. b4 Bd6 6. Bb2 O-O 7. Nf3 Qe7 8. Qc2 Nbd7 9. cxd5 cxd5 10. Nc3 a6 11. Na4 d4 12. Rc1 b5 13. Nc5 Bxc5 14. bxc5 Bb7 15. c6 Rac8 16. c7 Nd5 17. Qf5 Rxc7 18. Rxc7 Nxc7 19. Be2 dxe3 20. dxe3 f6 21. O-O Nc5 22. Rd1 Rd8 23. Bc3 Rxd1+ 24. Bxd1 Qd7 25. Qb1 Be4 26. Qc1 N7e6 27. Nd2 Bg6 28. Bg4 h5 29. Be2 Qd5 30. Bb4 Kh7 31. Nf3 Nd3 32. Qc8 Nxb4 33. axb4 Qa2 34. Bf1 Bf7 35. Bd3+ g6 36. Qd7 Kg7 37. Be4 Nf8 38. Qb7 Qc4 39. Bc6 Kg8 40. Qxa6 e4 41. Nd4 Qxb4

Src: https://www.chess.com/games/view/657313