Cyber Shadow is definitely a genuine old-school experience which mostly works in its favour although it can be a frustrating test of patience at times. No matter which way you slice it, if you enjoy old-school 2D action games, playing Cyber Shadow is a must.
Turrican Flashback Collection includes 4 undeniably old-school run 'n' gun games that genre fans may want to play but be warned; there are plenty of aspects that haven't aged well at all which makes playing this compilation quite annoying at times.
Cyberpunk 2077 is a frustrating mess. Its main narrative and characters are compelling but it's all within a game so buggy that, in terms of games with good stories and botched launches, it gives Fallout: New Vegas a run for its money. While I enjoyed my time in Night City because of its solid writing and characters, I cannot give Cyberpunk 2077 a recommendation.
Rod Land is an unexpected surprise from the golden age of adorable single-screen arcade games. Its nifty scoring mechanics and wide variety of enemies make it quite a satisfying treat so if you enjoy retro games then definitely give it a go.
Your enjoyment with Blacksmith of the Sand Kingdom will vary according to how much mileage you get out of its gameplay loop until it begins to become tedious. Before that sinks in, it's a great RPG but afterwards, you'll gladly come back to it just every once in a while.