>>346
その商品ページの「シューティング」タグ（英語なら"Shoot 'em Up"）から色々探せると思うけど
セール中で個人的に変わってて面白かったの挙げとく

縦
https://store.steampowered.com/app/439490/BLUE_REVOLVER/
https://store.steampowered.com/app/629440/Graze_Counter/
https://store.steampowered.com/app/463070/Mecha_Ritz_Steel_Rondo/
https://store.steampowered.com/app/774561/Rym_9000/
横
https://store.steampowered.com/app/262260/JetsnGuns_Gold/
https://store.steampowered.com/app/772610/QYO_Blaster/
https://store.steampowered.com/app/347160/Steredenn/
ディフェンダー
https://store.steampowered.com/app/263880/Aqua_Kitty__Milk_Mine_Defender/
タイムパイロット
https://store.steampowered.com/app/233150/LUFTRAUSERS/