First, let's talk about Steam release.
This compilation includes the original 2 games of the series. You may seen other games which have numbering from 3 to 7, but those were made by other publishers and aren't exactly official, from what I know. (Most of them are quite ugly and didn't bring any evolution/revolution to the formula of the first game)
This Steam release is a simple and flat "put game as is". This can be blamed on that new publishers have no access to the source port or other materials. Thus you will not find any trading cards, achievements, widescreen or any optimisation at all, not even Steam Overlay work in this one. On good side, the game should still work on modern computers.
Now the games themselves:
Neighbours From Hell 1 is point'n'click quest in which you control Woody as you make him sneak around the house, avoiding being seen by Mr. Rottweiler, and make traps, which usually involes first collecting an item in the house and then applying them to the object in house. Some traps may lead neighbour to another nasty trap. Oh, and tip-toeing around Neighbour's pets.
Beating the game by getting minium requeirement of traps is quite easy. Beating it by finding and applying every trap in every level is simple as well.
But what make the game the real crunchy puzzler is getting 100% rating on each level. To do this you are required not only to make use of every trap, but to make sure that Mr. Rottweiler get in as many of them in a row before he cools off from previous trap, resulting in him breaking down on each new one (with animation of him almost breaking his back). The timing, order of tricks and placement of traps which can be put in any room (items like marbles) to connect faraway traps is everything there, making you actually think and plan there.
The second game then takes place outside of house on various exotic locations. Sneaking is no more, gone are guardian pets. System of multiple lifes were added, so you aren't immeditly screwed when Neighbour sees you for the first time. And this time your life is made harder by a sudden appearance of mom of out bully, who keeps an eye and fists for you as well. Shame that she mostly spends her time either sleeping or shopping.
This time around getting the golden statue, which is equalient to what 100% rating was in the first game, is much easier, as Neighbour rage now stores on a meter that can stack "breakdowns" from other tricks and it cools down much slower. So it's a simply matter of making trap ahead of neighbour path non-stop, with no real thinking. Instead the game concentrates more on the figuring out tricks themselves and their activating, with some tricks working as part of "combo". Still, no real puzzle.
Now, the games are overall quite fun, with great music which fits to the game goodly and the joyful graphics that use prerendered 3D assets, which are greatly animated. It especially shows with a cartoony characters that the second game is full with. My only complaints would be same repeating breakdown animation for Mr. Rottwell in the first game, which was varied nicely in sequel, and how underplayed neighbour's mom is in Vacations, who could be less passive.
OH, and one of more important things: If you are fan of the slapstick humor (and slightly black one), then I am sure that you will be holding for your belly in this game from laughter.