Isto é quase certamente:
The Running Man by Stephen King publicado na 1982 sob o pseudônimo Richard Bachman.
A história tem o game show que você descreve (da wikipedia):
The contestant is declared an enemy of the state and released with a
12-hour head start before the Hunters, an elite team of
Network-employed hitmen, are sent out to kill him. The contestant
earns $100 per hour that he stays alive and avoids capture, an
additional $100 for each law enforcement officer or Hunter he kills,
and a grand prize of $1 billion if he survives for 30 days. Viewers
can receive cash rewards for informing the Network of the runner's
whereabouts. The runner is given $4,800 and a pocket video camera
before he leaves the studio. He can travel anywhere in the world, and
each day he must videotape two messages and mail them back to the
studio for broadcasting. If he neglects to send the messages, he will
be held in default of his Games contract and stop accumulating prize
money, but will continue to be hunted indefinitely.
Culmina em um seqüestro de avião (novamente na Wikipedia):
Richards takes McCone and Amelia as hostages and has the plane fly low
over populated areas to avoid being shot down by a surface-to-air
missile. However, Killian calls Richards aboard the plane and reveal
that he knows Richards does not have any explosives, as the plane's
security system would have detected them.
Termina com o avião colidindo com a torre de TV:
The book ends with the plane crashing into the tower, resulting in the
deaths of Richards and Killian. The novel closes with the description,
"... and it rained fire twenty blocks away."
Como @starpilotsix observa nos comentários da pergunta, sua descrição provavelmente é a nova versão. A versão do filme é diferente em alguns aspectos.