I think Jason really hammered that overview including the proper controls... and sure hit all the right points :) So, we have a slight take on whack a mole mixed with guitar hero with some points and bonuses for hitting in a row... and although there isnt much content here its a simple pleasure to bop those little rascals on the head in a more family friendly style, and agree its probably best tried a few times rather than something to play regularly...

Possibly more fun and easier when you remap the keys around a bit to your liking using keyboard manager from microsoft powertoys.
https://www.zdnet.com/home-and-office/work-life/how-to-remap-keys-using-keyboard-manager-in-microsofts-powertoys/

...While perhaps better when using some type of physical hammer to relieve stress as I cant imagine many of the digital versions even when good and of which there are manyout there will really hit...such as the old plug n play tv version that had a hammer which you can still find on ebay and had some variations in the gameplay https://zc-infinity.blogspot.com/2018/01/plug-n-play-game-corner-whac-mole.html Or if your rich you can buy the arcade game and be the place to go in the neighborhood or a legend to your kids and their friends https://www.hammacher.com/product/genuine-whac-a-mole-arcade-game or on ebay for less I'm sure https://www.ebay.com/itm/182108963999

Typing whack a mole game anyone? (free)
https://www.quicktypingtest.com/game/whack-mole

Rating: C-

Today's game is a minimalistic take on some popular games that found at amusement parks, more memorably, Whack a Mole that was at many Chuck E Cheese restaurants.

The moles come down in rows on the screen and you have to whack them to gain more points etc. It should be noted that this game given away has incorrect controls.

First off A, S ,D keys do nothing. The same with the left mouse button. Instead here is a breakdown of the right controls for the hammers (ignore the controls menu in game)

Q Key : First Row
W Key: Second Row
E Key: Third Row
R Key: Fourth Row
T Key: Fifth Row

Hopefully these controls will help you enjoy the game. Because of the scrolling action, if you stare at this game for too long, your vision may give you the feeling your surroundings are moving when they are not so exercise caution playing this game. I know this for a fact because I experienced the same thing when playing Guitar Hero which had the notes to play scrolling in the same fashion.

This game is a fun little distraction for a small break but not engaging to the point you want to play it over and over again.

On a side note, as I said above this is a take on a well known amusement game, So far I don't know of any games on PC that would give you enjoyment similar to the arcades and amusement parks, a lot of these games were on Wii which sadly I never owned. As a Switch owner I hope to see more games follow suit soon with the wrist strap attachments.