I think that any of the Chicago Gaming Company (CGC) games would fit the bill. Here is the manufacturers website. https://www.chicago-gaming.com/
Attack from Mars (AFM), Monster Bash (MB), and Medieval Madness (MM) are all approachable, are in the all time top 10, and have great toys. I would probably pick Attack From Mars as being a great game with a very simple goal for the beginner that has a great payoff (destroying the ship) and having more advanced goals for better players. The space ship blowing up is cool too. Medieval madness is similar with the exploding castle effect. Monster bash plays completely differently, but is a little easier with great toys.
These are remakes of classic machines that were very popular in the 1990s. A new Classic Edition (CE) AFM or MB are essentially identical remakes of the originals and run ~$6,000. The Special edition adds a color screen, shaker motor, and other goodies, and the LE adds a cool topper and some other spiffiness. Medieval Madness runs a bit more at about $7500 for the remake matching the original, and another $400 or so for the color upgrade chip.
If these are in your budget and you are trying to get you kids into this, I'd decide if I wanted a CE, Premium, or LE, then let the kids decide which of these 3 very different themes they liked best.
I personally would vote Attack From Mars, but that's just me.