When you start playing, you'll notice how smooth the controls are and how responsive the gameplay is. You'll be dodging bullets, jumping over obstacles, and taking down enemies in no time. The core loop of these games is ridiculously addictive, making you want to play just one more level.
As you progress, you'll encounter bigger challenges and tougher enemies, but that's what makes it so satisfying. You'll feel an amazing sense of accomplishment when you finally beat that one tough level or defeat a boss. And, let's be honest, it's pretty cool when you stumble upon a hidden power-up or a secret level!