Watching Wildlife on My Kenya Tour

I had the opportunity to watch wildlife during the first phase of my Kenya tour in Nairobi.
Prior to my Kenya tour, I had learnt from one of the travel Kenya resources that there is a fine game park within the confines of Nairobi city - and this turns out to be true.
One of the travel Kenya resources I came across was a blog run by a person who tours Kenya regularly which said that I could get access to the best wildlife by visiting the country's Maasai Mara game - which unfortunately I couldn't find the time or the money to visit.
According to this travel Kenya resource, nearly everyone who tours Kenya makes an effort to visit the Maasai Mara, especially to witness the wildebeest migration - which is considered one of the modern wonders of the world.
Unfortunately at the time I made my Kenya tour, the wildebeest migration was already past.
Nonetheless, I got to see all wildlife I wanted to see - including a lion, a buffalo, and a cheetah, whose photographs I have - in Nairobi national park during the first phase of my Kenya tour.
What is more, seeing the wildlife at Nairobi national park didn't turn out to be so expensive, because the park management runs a bus tour from Nairobi city center to the park for a few dollars' fee.