Despite advertising itself as twin-stick shooter and base-builder hybrid, I want to stress that this is a tower defence game more than anything else.
While you can certainly play it as a twin-stick, it's not really a long-term strategy that will allow you to reach the higher levels of the game. To do that, you'll need to focus on building up your base.
This isn't a huge black mark against the game, however, as the tower defence is fairly endearing and did keep me coming back over multiple play sessions. It does suffer from some of the age-old tower defence tropes, however, such as taking a long time to build momentum and the earlier stages not being particularly exciting once you've cleared them a few times.
The game is pitched firmly on the casual side of the market and overall succeeds in delivering an enjoyable experience, albeit in controlled bursts. I can't see many people having the stamina to jump back in right after failing on a later wave, as there are no "milestone" levels and when you die, you start over from the start.
Ultimately, don't be fooled into thinking this is a shooty game for kids, it's not. However, the game is fairly accessible as a base-building title and definitely offers several hours of fun. Provided you are looking for a casual tower defence experience, Sleep Tight has my recommendation.
If you are interested in learning more about the game and seeing it in action, check out Sleep Tight in a Nutshell here - https://youtu.be/iJW6mZia5XY
