In addition to the similar games listed above, which have been linked to this game specifically in the database, you may find games with a similar theme to Kerbal Space Program in the following lists:
These are games that involve actual Lego bricks or offer an experience that has the same plug and play building and creating as the classic toy.
These games have an educational element to them, but also offer experiences that are good games in their own right. This isn't busywork to trick you into learning, but clever and innovative ways to encounter history, physics, engineering, maths, geography and language subjects without feeling like you are in school. They also teach softer, deeper skills like long term strategy, planning, balancing systems, emotional intelligence, compassion, team-work and self-care.
Some of these games are aimed at younger players to play on their own, but others (as indicated by their PEGI ratings) are better for teenagers or played together in a family. Find some games that pique your interest, read through the details and decide how your child might benefit from playing them.
While a significant portion of video games focus on combat and competition, these titles offer a less aggressive way to progress and win. None of these games enable or require the player to cause harm to another living thing -- even Mario's merciless campaign to stomp on every Goomba he meets bars him from this list. Or then there's catching and selling fish in Animal Crossing that rule that one out.
Many of them are aimed at children and families, but you'll be surprised how many explore deeper, more mature themes in their narratives, or require just as much skill as a fast-paced first-person shooter. This means there's plenty of offer for parents who might lack the reflexes (or interest) to survive a round of Fortnite.
We've focused on the games you might not expect to be played non-violently here, but you can find the full list at Non-Violent Games Of the Day
curated by James Batchelor.